Is the legendary Shufflemaster rigged? This is a touchy subject and source of intense, on-going debate. Arguments from both sides include personal anecdotes, calling out the selling points around sorting, and even pointing to card detection capabilities in patent filing. However, card shuffling machines have a long history in the world of casinos and it doesn't seem likely they'll be going away any time soon.
Most of the concern around whether these systems are rigged comes from knowledge of how powerful technology can be, no matter what size box it comes in. The modern capabilities of photo detection and object recognition are undoubtedly powerful enough for card detection. Because cards are so uniform in their design, this becomes a rather vanilla problem for machine detection to tackle.
Long before object recognition technology, there has been a market for ideas which have the power to streamline the card tables in casinos. The motives are obvious, as both players and casinos can benefit from more efficient game play.